If you are after high proof H2O2 it can be had from many chemical supply : >companies (Chemicals for Research & Industry, 2928 Poplar, Oakland, CA ????? : Supposedly they got busted by the feds for selling materials for : drug making to unlicensed manufacturers, they are no longer in business. : So you will need another source John. : >, one being 35% H2O2.... : >used for cleaning electronics and stuff. It will REALLY BURN your skin if : >you get in contact with it so if you get it wear gloves and full face>shield. : The 35% stuff is used for rocket fuel! It will not only burn you it will explosivly combine with other materials. For patina uses there is no reason to buy 35%, stick to the 3% drugstore variety. : Jim : http://www.mokume-gane.com : jbin@well.com : James Binnion Metal Arts " />